Air-exhaust device



(No Model!) E.LORD. AIR EXHAUST DEVIGE.

Patented Mar. 9', 1897.

INVENTOB WI TIIESSES A rm/mErS UNITED STATES PATENT OFFICE.

ERNEST LORD, OF SCHAGI-ITICOKE, NEW YORK.

AIR-EXHAUST DEVICE.

SPECIFICATION forming part of Letters Patent No. 578,410, dated March 9,1897.

Application filed July 9, 1896. Serial No. 598,518. No model.)

of the United States, and aresident of Schaghticoke,county ofRensselaer,and State of New York, have invented certain new and usefulImprovements in Air -Exhaust Devices, of which the following is aspecification, reference being had to the accompanying drawings, forminga part thereof, in which similar letters of reference indicatecorresponding parts.

This invention relates to air-exhaust devices for fruit cans, jars, andsimilar vessels; and the object thereof is to provide an improved deviceof this class which is simple in construction and operation, and whichis also comparatively inexpensive, while being well adapted toaccomplish the result for \vhichit is intended.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which- Figure 1 is asectional side view of a portion of a jar or can with my improvedair-exhaustdevice connected therewith, and Fig. 2 is a perspective viewof separate parts or details of the construction.

In the drawings forming part of this specification I have shown at A theupper portion of an ordinary fruit-jar, and said jar is provided with acap or cover a, which may be secured thereto in the usual manner or anydesired manner, and said cap or cover is provided with a centralcircular opening 0. and in practice I place or secure in said opening atubular plug B, which is closed at the bottom and provided at its upperend with an annular flange or rimb, and said tubular plug is alsoprovided in its sides with ports or passages 19 The inner walls of thetubular plug are screw-threaded, and I also provide a sleeve D,which isscrew-threaded on both the outer and inner walls thereofand which isadapted to be screwed into the tubular plug 13, and in connectiontherewith I employ a tube G, which is screw-threaded at its lower endand adapted to be screwed into the sleeve D, and said tube G is providedwith a valve g,which may be of any desired form or construction.

The upper end of the tube G is provided with an annular flange or rim 9and above which said tube is screw-threaded, and I also provide anair-pump H, which is adapted to be connected to said tube G, as showninFig. 1, and said air-pump H is of the ordinary form, with the exceptionthat the flexible washer K, which is mounted back of the piston rod orvalve L, on the piston-shaft M, works in the reverse direction, the airpassing through the piston head or valve L in the direction indicated bythe arrows, and the opposite end of the cylinder of the pump is providedwith openings, as shown at 0 for the egress of the air.

The operation will be readily understood from the foregoing descriptionwhen taken in connection with the accompanying drawings and thefollowing statement thereof. Whenever it is desired to exhaust the airfrom a can or jar, the tubular plug D is inserted through the cap a, thesleeve is screwed into said tubular plug, as shownin Fig. 1, and thetube G is then connected to said sleeve, and the operation of exhaustingthe air will be readily understood without further descrip tion.

Whenthe air is exhausted, the sleeve D is screwed down until it closesthe ports or openings 5 after which the tube G is removed and with itthe exhaust-pump, and the sleeve D may then be closed by ascrew-threaded plug P. v

The plug P is not absolutely essential, but may be employed simply as anadditional security to prevent the air from again entering the can orjar A.

The advantages of this device will be apparent to all housekeepers, andmay be em ployed wherever it is necessary to exhaust the air from anyform of vessel, and my invention is not limited to the exact form,construction, and arrangement of the various parts thereof as hereinshown and described,

. as it is evident that changes in and modifications of saidconstruction may be made without departing from the spirit of myinvention stantially as shown and described 2. In a device forexhausting the air from cans, jars or other vessels, the combinationwith an air-pump of a tube provided with a valve which is secured in oneend thereof, a sleeve mounted on the lower end of said tube and atubular plug closed at its lower end and provided with side ports oropenings, said tubular plug being adapted to be secured in the cap orcover of the can, jar or other vessel, substantially as shown anddescribed.

3. In a device for exhausting the air from cans, jars or other vessels,the combination with an air-pump of a tube provided with a valve whichis secured in one end thereof, .a

sleeve mounted on the lower end of said tube and a tubular plug closedat its lower end and provided with side ports or openings, said tubularplug being adapted to be secured in the cap or cover of the can, jar orother Vessel, and the air-pump beingprovioled with a piston andpiston-shaft, on which is mounted a flexible washer, said washer beingreversed on said piston and the air in the operation thereof beingpassed backwardly through the piston, substantially as shown anddescribed.

4. In an air-exhaust device for cans, jars or other vessels, thecombination of the tubular plug as B which is secured in the cap orcover thereof, a screw-threaded sleeve as D which is mounted in saidtubular plug, a tube as G mounted in said sleeve and provided with anair-pump, said tubular plug being closed at the bottom and provided withside ports or openings and said sleeve being adapted to be closed afterthe tube is removed therefrom by a screw-threaded plug, substantially asshown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 4th day of .Iuly,-

ERNEST LORD. Vitnesses:

CLARENCE JOHN LAPE, IRA EDWARD ATKINS.

